Bernhard remmers



(No Model.) 2 Sheets-Sheet; 1.

B. REMMERS.

FILTER PRESS.

No. 564,715. Patented July 28, 1896.

Fig. 1.

Fig. 2. Fig. 3.

Z, V 4 E SIZES wnwassas: INVENTOR aww ATTORNEYAA- (No Model.) 2Sheets-Sheet; 2.

B. REMMBRS.

FILTER PRESS.

No. 564,715. Patented July 28, 1896 INVENTOR 0 ATTORNEYAJ" UNITEDSTATES" PATENT OFFICE.

BERNHARD REMMERS, OF BROOKLYN, N. Y.

F|LTER,-PRESS.'

SPECIFICATION forming part of Letters Patent No. 564,715, dated July 28,1896.

Application filed February 11, 1895. Serial No. 537,906. (No model.)

To all whmn it nuty concern:

Be it known that I, BERNHARD REMMERS, a citizen of the United States,and aresident of Brooklyn, county of Kings, and State of New York, haveinvented certain new and useful Improvements in Filter-Presses, of whichthe following is a specification, reference being had to theaccompanying drawings, forming a part thereof, in which similar lettersand numerals of reference indicate corresponding parts in all thefigures.

The object of my invention is to provide a more simple and effectualmethod and apparatus than are now employed for feeding the filteringliquids into the press, and also for carrying out the process oflixiviation as now conducted in apparatus of a similar character; andthe invention consists of the construction and combination of partswhich I will now describe, with the aid of the accompanying drawings,forming part of this specification, in which Figure 1 is a top plan viewof a filteringpress provided with my improvement, showing thearrangement of the new feeding appliances with certain parts broken awayto show the openings between the plates with which the feed-nozzlescommunicate. Fig. 2 is a front end view of the press in the .directionof the arrow in Fig. 1,'showing,the rods from which the feed-nozzles andpipe are suspended at the top of the machine and also the arrangement ofthe valves and pipes for closed delivery and lixiviation. Fig. 3 is aside view of the press, the rear end being left off. Fig. i is a view ofthe top of two filtering-plates, one of which is provided with its clothand also with the recesses with which the feed-nozzles communicate andthe other with the filtering-cloth removed. Fig. 5 is a section on theline A B of Fig. 6, showing the plates with their filtering-cloths andone of the feed-nozzles in position. Fig. 6 represents one of thefiltering-plates with its cloth turned up to show the corrugated surfaceof the plate. Fig. 7 is an end view of one of the feed-nozzles. Fig.8 isa side View of two of said nozzles, one of which is insection, showingthe manner of uniting these nozzles so as to form a pipe through whichthe filtering fluid passes and from which itis discharged into thepress. Fig.0 is a seea transverse vertical section of the pipes andvalves as arranged for closed delivery and for lixiviation.

Referring to the drawings, it will be seen that the framework of thepress consists of the front, fixed head 2, the rear end 3, and the sidebars 4, together with the top rods 5, three of which are arranged inproximity, as

tion on the line E F of Fig. 7, and Fig. 10 is shown, and from two ofwhich the feed-noz- "1 zles are suspended, as hereinafter described, andthe lower side rods 6, which form a support forthe closed delivery andlixiviation pipes and attachments shown in Fig. 10.

Suspended from the side bars 4 isthemovable head or follower 7, providedwith side hooks 8, and this head or follower is operated by a screwpassing through the end piece 3.

The filtering-plates 10 are. provided with side hooks 11, (see Fig. 6,)by means of which "j;

they are suspended from the side bars 4. They consist of a rectangularframe 12, (see Figs. 4 and 5,) having a central body portion 13,provided with vertical corrugations or grooves, as shown in Figs. 4 and6, and when in operation their contiguous surfaces are covered with afiltering-cloth 14: in the usual manner. At the bottom of each of theseplates,

in the lower side frame, is a channel 15, (see Figs. 5 and 6,) which isdesigned to carry oif the filtered liquid, and a series of ports oropenings 16 in the bottom of the frame (see Fig. 6) form a communicationbetween this channel and the filtering-spaces between the plates. Thetop frames of these plates, or,

filtering-chambers in the'press, besides the end nozzles.

Each nozzle is provided with a hook 19, by i which it is suspended fromone of the rods 5, and a central tube 20, with which communicates theoval-shaped discharge-pipe 21,which communicates with thesimilarly-shaped opening 17 between the frames 10, when the parts are inoperative position, The manner in which these nozzles are united to forma pipe is clearly shown in Fig. 8, the enlarged end of the tube on onebeing slipped over the reduced end of the tube on the adjacent side ofthe other, and each being preferably provided with a screw-nut 12 and arubber or other ring packing 23, so that when the plates with theircloths are together, the nozzles having been put in proper position, andthe screwnuts 22 properly adjusted, a perfectly tight joint is formedthroughout the length of the feed-channel. r

The means for discharging the filtrate consists of a discharge-cock 24,which is provided with a three-way valve, and one of which I place onthe opposite corner of every alternate plate, is shown in Figs. 1 and 2,and each of which communicates with one of the channels 15 in thefilter-plates. These dischargecocks are provided with a discharge-pipe25, which is all that is necessary if the filtrate is to be dischargedinto the gutter. If, however, closed delivery or lixivation is required,I connect with each of these efflux-pipes, by any suitable means, apipe, as 26, which communicates with each of said effluX-cocks by meansof a slip or expansion joint or coupling, as shown in Fig. 10. One endof these pipes 26, one of which is placed on each side of the press, isclosed, and the other connected with another pipe (not shown) whichsupplies the liquid for lixiviation to the press. The slip or expansionjoint between the cook 24 and the pipe 26 is provided with a rubberwasher 27, also a shoulder or washer 2S and a set-nut 29, and betweenthe set-nut 29 and thewasher 28 is placed one arm of the bracket orclamp 30, the object of which is to make a tight joint between the pipe26 and the slipjoint by clamping the rubber washer closely to the pipe,which is accomplished by means of a set-screw 31. The pipe 26 is alsoprovided, near each end, with a projecting hook 32', by which it issuspended from the lower side rod 6.

Referring again to Fig. 1, the part indicated by the numeral 33 wouldseem to be one of the filtering-plates. As a matter of fact, however, itis a part of the head 2, and is so formed on its inner side as toconstitute a part of the first filtering-chamber, and is cut away on itsupper side, so as to form a part of one of the openings 17.

The press is made ready for operation, preferably, in the followingmanner: The nozzles 18 are first preferably suspended from the two siderods 5 5 in the proper manner, the nozzles being arranged alternately onthe rods, as shown in Fig. 1. They may be then thrown or swung back tilltheir lower ends rest on the center rod 5. All the plates are placed ontheir supports 4 and pushed back toward the end 3, the follower 7 havingfirst been moved back to permit of this arrangement. Then put a singleor half cloth on the front head, swing down the first nozzle to itsproper position, where the dischargepipe thereof will enter the opening17 in the plate. plate and push it against the first, when the firstnozzle will be in its proper position.

Then turn down the second nozzle, and, hav

ing hung a double or long cloth over the next plate, push it forward, asin the first instance, and turn down another nozzle and so on until allthe plates have been placed in position. Then press the follower 7forward as far as possible by means of the screw 9 and hand wheelattached thereto. After the head has been firmly set start .at the firstnozzle and turn the nut 22 thereon to make the joint tight and proceedwith each nozzle, treating the nuts thereon in the same manner, afterwhich the filtrate or filtering fluid may be turned on. This fluidpasses into the feedchannels formed by the nozzles through Then put adouble cloth on the next pipes 34:, Fig. 1, and the fio-w thereof isrendered constant by means of gravity-pressure, pumps, or otherwise.

It will be seen on reference to Fig. 6 that the discharge-channel 15 inthe bottom thereof is open at both ends. In the ordinary operation ofthe press one end of this channel is closed, in any desired manner, anda discharge or effiuX cock applied to the other, and these cocks areapplied to the plates alternately on opposite sides of the press, ashereinbefore described. ever, that a discharge-cock may be applied toeach side of the plate, if required.

The tightening of the nuts on the feed-nozzles need not be accomplishedevery time the press is emptied, but only when it becomes necessary byreason of leaks in the feedchannel formed by the nozzles, and it will beobserved that in this arrangement there are It is evident, howno holesin the cloths caused by the feedits own discharge-pipe, and this may beof advantage in the process of lixiviation when it may not be desired topass the lixiviating fluid through all the filtering-chambers.

As hereinbefore stated, the pipe 26 and slip-joint by which itcommunicates with the effluX-cock 28 are only necessary when closeddelivery is required or process of lixiviation carried out. In thelatter process one end of each of said pipes is closed and the otherplaced in communication with a pipe or source of supply (not shown)through which the lixiviating fluid is supplied to the press underpressure in the usual manner, and it is evident that either or both ofsaid pipes 26 may be used for this purpose, or either or all of thefiltering-chambers, and also that first one side pipe 26 and then theother, and the filtering-chambers with which each is connected, may beused alternately. These pipes 26 may also be used for blowing air orsteam through the cakes found in the filtering chambers for the purposeof drying, or the air may also be used for lixiviation, and I have undercontrol and am able to test at any time the flow from any one plate bysimply turning the valve of the effiuX-cock from closed to opendelivery. I can then see if the liquid is clear, or when lixiviating, ifsuch is finished in any plate or chamber, so that I can turn the sameoff in case the fluid is running turbid or the lixiviation is completed.7

Among the many advantages of my invention are the independentfeed-channels and their form of construction and manner of communicationwith the filtering plates or chambers,the separate or independent closeddelivery channel or channels, and the separate or independentlixiviating channel or channels and the method of connecting them withthe press and the operation thereof.

It is evident that many departures from and modifications of theconstruction herein shown and described might be made without departingfrom the scope of my invention, and I do not limit myself to the exactform herein set out; but,

' Having fully described my invention, its construction and operation, Iclaim, and desire to secure by Letters Patent,the following:

1. In a filtering-press, a series of filteringplates each of said platescomprising a rectangular frame, a central body portion provided withcorrugations or grooves adapted to be covered with filtering-cloths, thebottom of said plate being provided with ports 16 leading into anoutlet-channel 15 and the sides of the top of the frame being cut awayto form inlet-openings 17, substantially as described.

2. In a filtering-press, the combination of a front head, a rear end,the side bars connecting the head and end, the top rods 5, thereof whichtop rods are arranged close together, the follower, a screw passingthrough the end and operating the follower, a series of filtering-framesarranged between the head and end, and a feed-channel consisting of anumber of nozzles 18, each of said nozzles being provided with a hook bywhich it is suspended from one of the top rods,substantially asdescribed.

3. In afiltering-press, the combination of a frame, a series offiltering-plates supported thereon and provided with inlet-openings 17and feed-pipes communicating with said inlet-openings and comprising aseries of nozzles fitted together, each of said nozzles consisting of ahook by which it is supported in place, a central tube 20 arrangedincommunication with an oval-shaped discharge-pipe 21, the small end ofone nozzle being fitted in the larger end of the adjacent nozzle,apacking-ring23 and an adjusting-nut 22, substantially as and for thepurpose described.

4. In a filtering-press, the combination of a frame, a series offiltering-plates supported therein,and provided with ports 16 in thebottom thereof opening into discharge-channels 15, a discharge-cock onthe opposite corner of each alternate plate communicating with thechannel therein; said discharge-cock com prising a three-way valve and adischargepipe 25, a pipe 26 connected therewith by an expansion joint,said joint comprising a washer 27,a shoulder 28,a set-nut 29,a bracket30 having one arm arranged between the setnut and washer, and aset-screw 31, substantially as described.

5. Ina filtering-press, the combination of a frame, the rods 5 arrangedthereon, and a feed-pipe comprising a number of nozzles adapted to beconnected together, each of said nozzles being provided with a hook 19engaging one of the rods 5 to support said nozzle in place,substantially as described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses,'this 9th day of February, 1895.

BERNHARD REMMERS.

Witnesses:

PERCY T. GRIFFITH, L. M. MULLER.

